Thread-parting device.



C.`H. DRAPER L J. NORTHRUP. THREAD PARTING DEVIQE. APPLICATION HLED APR.23. 1915.

mermasept. 111918.

3 SH[E/TS-SHEU I,

C. H.`DRAPER L J. NORTHROP THREAD PARTING DEVICE.

APPUCATIN FILED APR. 23| 1915 1 279,298. Patented Sept. 11, 1918L 3 SHEETS-SHEET 2. l

@Mgz

CLARE H. DRAPER AND JONAS N ORTHROP,

TO HOPJDALIE4 MANUFACTURING COMP PORATION OF MASSACHUSETTS.

SEH

OF HOPEDALE, MASSACHUSETTS, ASSIGNORS ANY, OF IVIILFORD, MASSACHUSETTS, A COR-4 lrnnnan rearward DEVICE.

Specification of Letters Patent. i Patented swept. 17', 1918.

Application led April 23, 1915. Serial No. 23,325.

1'0 aM w/Lom it may concerne:

Be it known that we, CLARE H. Daarna and JONAS Henri-mor, citizens of the. United States, residing at Hopedale, in the county of lVorcester and State of Massachusetts,

` have invented certain new and useful Improvements in Thread-Parting Devices; and n'e do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and,V

use the same. A

The present invention relates to an imprOVment in thread `parting mechanism for weft replenishing looms. When the iilling on the bobbinl or .filling carrier or' a weft replenishing loom has been exhausted to a predetermined extent and the. bobbin is about to -be ejected from the shuttle, t-he usual practice is to secure or clamp the thread extending from the fell of the cloth to the outgoing bobbin, sever it relatively near the shuttle by means connected with the shuttle feeler and afterward close to the selvtage by parting means mounted on or connected with the loom temple. Thethread is thereafter allowed to drop into a receptacle provided for thepurpose. In the present invention the thread is not positively clamped prior to the severing operation but 1s' received and retained in a retaining device so thatthe necessity for the usual somewhat complicated thread clamping means is eliminated. The thread parting means often employed consists 'of two shearing blades, one of which is fixed and the other movable, the device operating upon the principle of the ordinary scissors. A serious detriment to the more successful operation of this type of 'thread parting means lies in the rapidity with which the cutting edges are worn away, because of the fact that the thread is not held suHcient-ly taut between the cutting edges but is allowed to slip between the blades in such manner that they have a binding effect rather than a cutting el'ect upon the thread. In the present invention a thread positioning device is provided and arranged along means 'so that the thread will be properly positioned during the thread parting operation whereby the binding effect beside the thread parting .i

is eliminated and with it the necessity of constantly resharpening the cutters, The object of the present invention, then., thread parting mechanism of improved construction, of simplicity of structure and of Vgreatly increased eilioienoy, and to these ends the invention consists off the mechanism hereinafter described andclaimed. f

In the accompanying drawings illustrating the preferred embodiment of the invention Figure l is a side elevation of the hopper and associated parts 'of a weft` replenishing loom showing the application of the thread parting mechanism thereto; Fig. 2 is a side elevation of the parts shown in Fig. 1 just prior to the final vstep in the operais to produce av tion 'of the weft replenishing mechanism; Y

necessary for the operation of the threao Y parting mechanism consists of a hop` per 10 mounted upon a bracket ll secured to the breast beam 12; the hopper arm' 13-is mounted upon a rock shaft 14e which extends along the front side of the loom the llng feeler mechanism. Mounted upon of Fig. 2 showing in dotted lines the 75 The and is connected at the. other end with the transferrer stud l5 is an arm'lG connected by means oi' the link 1'? with. the shuttle feeler 18 which is mounted upona stud 19 secured to the hopper plate 10. When a fresh supply of lling is to be inserted in the shuttle, the hopper arm 13 moves from l the position shown lin Fig. l to the position shown in Fig. 2, drawing with it the arm 16 to which it is connected by means. of the spring 2Q, and thereupon theshuttle feeler is swung'rearwardly or toward the left as shown in Fi ."2. Y

, lThe threat?l parting meansJjindicated generally by the reference character 21, is mounted upon the lay 22 carried by the sword 23. The means for engaging and drawing the filling thread 24; into position to be acted upon by the thread parting means consists of a thread engaging hook 25 carried by the shuttle feeler 18. A thread parter actuating means 26 is mounted upon the breast beam 12; and a thread receiving and retaining device 27 is mounted upon the loom temple 28 secured to the breast beam. The thread parting means comprises a fixed blade 30 secured within a recess in a bracket 31 secured to the front of the lay 22 and a movable blade 32 pivoted on the fixed blade and the bracket 31 at 83. A helical spring 3ft (Fig. 4) encircling the pivot 33 tends to maintain the movablehlade in open position. The movable blade is adapted to be actuated by the thread partei' actuator 26 contacting with the stud 35 projecting laterally from the lower part of the movable thread parter blade 32 upon a forward beat of the lay when the parts are in the position shown in Fig. 2, which is immediately before the insertion of a fresh supply of filling in the shuttle. A thread positioning device is secured to the base 3G of the thread parter supporting bracket 31 by means of the screws 38. The construction of the thread positioning device 37 is such that the movable thread parter blade 32 passes between the thread positioning device 37 and the thread parter supporting bracket 31 during the thread parting operation. The thread positioning device 37 is provided with an edge 39 which extends rearwardly somewhat beyond the cutting edge of the fixed thread parter blade 30 so that when the thread engaging hook 25 engages the filling thread 24 and draws it against the edge 39 of the positioning device 37 the thread will beheld in sucl. position as to be acted upon by 'the thread parter substantially at right angles to its length throughout the thread parting operation thereby insuring a clean cutting action.

'.ihe thread parter actuating means 26 is pivoted at L10 upon a bracket 41 secured to the breast beam l lt Awill be observed that the thread parter actuator 26 is in the form of a bell crank lever and that its threadparter actuating end is provlded with a condyle-like 'formation or boss 42 and that the lever is so mounted that when the shuttle feeler 18 moves rearwardly the weight of the boss 42 causes it to drop into such position that the pin or stud 35 on the n'iovahlc thread parter blade will strike it upon the forward beat of the lay. The operative position ofthe boss 42 is determined by the engagement of the lug -il-B projecting laterally from the thread parter actuator 26 with a slop, 44 secured to the bracket 4 1. The upper end it? of the thread parter actuator pronavegas jects upwardly into the path of travel of the shuttle feeler18 and, when the shuttle feeler returns to its' inoperative position after thev operation of the, weft replenishing mechanisin the lower end of the shuttle feeler engages the head 4:6 of the thread parter actuator and. moves the actuator into inoperative position.

The thread engaging hook 25'is pivoted at 48 upon a hook supporting lever 49, in. turn pivoted at 50 upon the shuttle feeler 18. The spring 51, one end of which engages the thread engaging hook 25 and the other end of which engages a lug 52 projecting laterally from the hook supportinglever 49, tends to maintain the heel 53 of the hook 2' against the lug 52.* The thread'engaging hook 25 is made thus yielding so that after it has swung'to` the left and has commenced its forward motion, which causes it to engage the shuttle race 54 (which is indicated in dotted line inFig. 2 just below the shuttle position relatively thereto. The spring 55 which encircles the pivot pin 50 tends to maintain the tail of the hook supporting lever 49 against the lug 56 projecting laterally from the shuttle feeler 18. The lever 49 is provided on its rear edge with a bulging portion 57 which is adapted to he engaged by a bunter 58 secured upon the shuttle box 59. When the shuttle feeler 18 has moved from the position shown in Fig. 1 to the position shown in Fig. 2 just previous to weft replenishment, the bunter 58 upon the next forward beat of the lay will turn the lever 49 on its pivot so thereby to push the hook 25 toward the breast beam as shown in Fig. During this forward movement of the thread engaging hook 25 the filling thread @itis drawn against the thread positioning device 37 in al position to beacted upon by the thread parter and also intoithe slot (it) of the thread receiving and retaining device 27, Upon the return beat ofthe lay.n the hook supporting leverll) relieved ofi the pressure of the bunter 58 will swing into its normal position under propulsion of the spring v The thread receiving and retaining device consists of two jaws, an upper aw 61, and a lower jaw G2, havin g; a slot G0 between them for receiving the filling thread; when the thread engaging hook 25 draws the thread ltoward the breast beam and for retaining or hold ing the filling` thread after it has been severed, out' of the path of the: lay, so that this loose end may not be caught up and woven into the cloth. This loose endof filling thread is retained in this position until the 'thread parter titl connected with the loom Lavazee temple severs the thread close beside the selvage, and thereupon the. thread drops into a receptacle placed below the loom for that purpose.

Willen the filling on the bobbin or filling carrier has been exhausted to a predetermined extent and they illing feeler or other mechanism has operated to swing the.

hop ier arm 13 to the right and, simultaneously therewith, the shuttle feeler 18 to the left, the thread engaging hook is swung into such position that it will be out of the path of the i'illing thread as the filling thread is carried forward with the lay. Coin ident with the arrival of the iillino thread 2st at t-he position shown in dottec line'in Fig. 2, the bunter 58 strikes the hook. supporting lever r-i9 and as the lay continues its forward motion the bunter 58 lever lf) and-the thread engaging hook toward the breast beam, the hook meanwhile engaging the filling thread 24 and carrying itforward. The thread in its forward passage enters the slot 60 in the thread receiving and retaining device 27 before it is acted uponby the thread partei'. ln drawing the thread forward the thread engaging hoot: the thread positioning' device 37 so that by the time the lay reaches the full extent of its forward beat and the pin 35 on the movable thread partei' blade 32 strikesthe boss r2 on the thread partei actuator 2G, which smnes its operative position immediately upon the backward movement or" the shuttle feeier, the thread is in position to becut. Upon the completion ot the thread cutting operation which issimultaneous with the arrival of the lay to the extreme of its for- ".vard bea-t, the loose end of the thread falls in front ofthe thread retaining device where is held lont of the path' of thelay until such time the thread partei' on the loom temple act upon it, after which it drops into i the present invention con- ,iplat ad partingmechanism in n nich the 'thread parting means is provided with a thread positioning device so arranged 5 to the thread parting means when thread extending fromthe to the on `)ing bobbin is to be parted, it is drawn in o such position as to be held tant between the cutting blades during the throal parting' operation. The means for and 5 fawing the'thread into this mounted npon a part of the weft repmnishing mechanism which is moved toward the lay during the weft replenishing operat, to bring the thread engagmeans ad the thread, so that as the means is pushed forward 1. ulead will also be carried thread receiving and retaini device has a construction of such form pushes the draws the thread against any time but is simply retained or held out of the path ofthe forwardly beating lay until such time as it is parted close to the selvage. lt is, therefore, apparent that the invention may j than that shown in the illustrated embodiment` thereof and the following claims.

Having thus described our invention,- what we claim is: v

l. A weft replenishing loom having, Vin combination, weft replenishing mechanism, a thread partei' located relatively near the weft replenishing mechanism for severing the outgoing filling end, a thread holding device located adjacent the selvage consisting of a pair of fixed ally from the selvage, on the replenishing beat-up of the lay for engaging the outgoinglling end and pre'- senting it to the thread parter and simultaneously therewith drawing it between the jaws of the thread holding device.

2. A weft replenishing loom having, in combination, a lay, a breast` beam, weft re- 1i lenishing mechanism, a temple, a temple thread parter, a thread parter located rela tively near the weft replenishing mechanism, a thread receiving and retaining device mounted on the temple and Vlocated betweenl the temple 'thread parterl and the thread parter located near the weft replenishing mechanism, said receiving vice comprising separated jaws projecting laterally from the temple toward the'weft replenishing mechanism, and meansfor enlgaging and positively drawing the thread the replenishing mechanism.

be within the spirit of be embodied in other formsv and retaining de- 3. A weft replenishing loom haa/ing, in

combination, weft replenishing mechanism, a shuttle feeler, a lay, a breast beam, a thread parter mounted on the lay, and means mounted on the breast beam normally held in inoperative position by the shuttle feeler and released to operative position by the operation of the weft replenishing mechanism to actuate the thread parter on a forward beat of the lay.

l. A weft replenishing loom having, in combination, weft replenishing mechanism, a shuttle feeler, a lay, a shuttle, a breast beam, a temple mounted on the breast beam, a thread retaining device provided with a slot mounted on the temple, thread parting means mounted on the lay and thread engaging means mounted on the shuttle feeler adapted on operation of the weft replenishing mechanism to engage the filli1ig thread extending from the fell to the outgoing bobbin and draw it toward the breast beam so 5. A weft replenishing loom having, in eombination,- weft replenishing mechanism, a lay, a shuttle, a breast beam, a' temple mounted on the breast beam, a thread ref taining device provided with a slot'mount-A ed on the temple, thread partingy means Imounted on the lay, and thread'engaging -means connected with the weft replenishing mechanism and adapted on operation of the weft replenishing mechanism to engage the filling thread extending from the fell to the outgoing bobbin and draw it toward the breast beam so as to bring it within the slot in the thread retaining device.

6. A weft replenishing loom having, in combination, weft replenishing mechanism, a shuttle feeler, a lay,- a breast beam, thread parting meansmounted on the lay, including a thread positioning device, and means mounted on the shuttle feeler for engaging the thread and drawing it against the thread positioning device.

7. A weft replenishing loom having, in combination, weft re-plenishing mechanism,

a lay, a breast beam, thread parting means mounted on the lay, including a thread p0si tioning device, and means connected with the weft replenishing mechanism for engaging the thread and drawing it against the thread positioning' device.

S. A wett replenishing loom having, in combination, weft replenishing mechanism, a shuttler 'teeleny -a lay, a breast beam, a thread parter mounted on the lay, means mounted on the breast beam for actuating the thread partei' 'upon the operation ot' the weft repleni 'ling mechanism, and thread engaging means moi'uited on the shuttle feeler, self-actuated lo more into inoperative position and having provision .tor operative actuation during the thread engaging operation.

9. A wett replenishing` loom having, in combination, wett. replenishing mechanism, a lay, abreast beam, a thread partei' mounted on the lay, means mounted on the breast beam for actuating the thread parter upon the operai ion yoi3 the wett replenish ing mechanism, and thread engaging means conneel ed with the weft replenishing meeha-nism, self-actuated to move into inoperative position and having provision for operative actuation during the thread engaging operation f 10. A wett replenishing loom having, in

combination, wett replenishing mechanism,'

a lay, a breast. beam, a shuttle 'fcelen means mounted on the shuttle leeler for rengaging' and drawing a tilling thread 'toward the breast beam on the operation of the weft replenishing mechanism, and means mounted o n the lay for striking and pushing forward toward the breast beam the thread engaging means.

11i A weft replenishing loom having, in

combination, weft replenishing mechanism,v

a lay, a breast beam, `means connected with the weft replenislnng mechanism for engaging' and drawing a tilling thread 'toward the breast beam on the operation of the weft replenishing mechanism, and means mounte ved on the lay for striking and pushing forward toward the breast beam the thread engaging means.

12. A weft replenishing loom having, in I combination, a lay, a thread parter mounted on the lay, a shuttle feeler, a breast beam, thread parter actuating means mounted on `the breast beam, said thread parter actuating means being maintained in inoperative position by the shuttle feeler during normal operation of the loom and being adapted to assume an operative lposition on the backward movement lof the shuttle feeler.A

13, A weft replenishing loom having, in`k combination, a lay, a thread parter mounted on the lay, a breast beam, thread 'partei' actuating means mounted on the breastl beam, a shuttle feeler, and a thread engagv"ing hook support mounted on the shuttle positioning device secured thereto, a shuttleI fee-lentlu'ead engaging means mounted on the shuttle t'celer tor engaging the thread ot' an outgoing bobbin upon au operation of the filling replenishing mechanism and drawing it against the lixed cutting member les `and the positioning device. means mounted on the lay for actuating the thread engaging l i means, a breast beam, means mounted on the e breast 'beam normally held in inoperative position by the shuttle Jeeler for actuating the thread part-ing means a temple secured to the breast beam 'and a device mounted 0n the temple provided with means for receiving the thread extending from the .tell to Y the outgoing bobhin as it is drawn toward the lay after it has been engaged by the thread engaging means and for retaining it after the thread parting operation.

15. A. weft replenishing loom having, in

combination, weft replenishing mechanisnralw a temple thread cutter, a thread parter located near the shuttle box, a thread retainer loe-ated near the selvage for 'retaining the thread without clamping it until it has been cut by the temple thread cutter, and a thread engager to deliver the thread simultaneously to the partei.' and to the retainer.

16. A weft replenishing loom having, in

t u l n l I n combinatioin Weit replenielnng .meelianis a thread parteron the .lay near the shuttle ibex, a temple partei, a thread engaging cle- ',vice for delivering the Ithread te the two partera 17. A weft replenishing leoni having, in combination, weft replenishing4 mechanism, a lay, a shuttle box, a thread partei' on the. lay-*near 'the shuttle box', a temple thread partei', 'and a thread retainer near the temple thread partei' and between the latter and the thread parter on the lay, said thread .retainer having'provisien :for retaining the tlireadafter it has been severed by the partei` on the lay and until it is severed by the temple partei'.

18. A weft replenishing leemV having, in combination, weft replenishing mechanism, a shuttle, a bobbin, a thread partei' mounted on the lay having normally open blades, means separate from the blades for positively engaging and drawing the thread of the outgoing bohbin between the blades and means for causing the blades to close upon and eut the thread upon operation of the weft revlenishing mechanism.

19. ,A jveft replenishing looin having, in combination, a lay, a shuttle, and a thread parter mounted on the front of the lay having "a fixed blade disposed in front of the path of the shuttle and a movable blade 'normally below the plane of the path of the Shuttle, said hlades heine" and operating out'- side of the path the e iuttle. f

20.4 A repleniehiner .leoni having, in combination, a, lay including a shuttle ra, a thread partei, and a yieldingly meunted thread engaging hoek for bringing the thread into positie-n to be acted upon by the partei?, .eenstructed and arranged to be swung into a pesition of clearance with re* speci; to the thread until the thread has'been carried ferward heyend the engaging end of "the hook, and thereafter to 4be brought in eentaet with the shuttle race behind the thread and nieve forward aereas the shuttle race.

2l, A feeler-controlled weft replenishing leem having, in combination, a lay, a thread parteii mounted on the lay having two blades normally open in front of the thread, means foi drawing the thread into positien to be acted upon 'by tliethread parter, and means for actuating the parter.

A'wei't replenishing loom having, in eomhinatien, a lay, shuttle heir, a thread partei' mounted on the lay and located near the shuttle bex, a thread receiving and retaining device located near the selvage, and a thread for delivering the thread to the thread partei. and te the retaining deviee.

CLARE lH. DRAPER. UNAS NORTHROP.

ene'ap'iiin device havin nrovision u oi b 1 

